(19)

(11)

EP 2 411 340 A2

(12)

(88) Date of publication A3: 09.12.2010 (43) Date of publication: 01.02.2012 Bulletin 2012/05 (21) Application number: 10720035.4 (22) Date of filing: 29.03.2010

(51) International Patent Classification (IPC):  C03B 37/018(2006.01) (86) International application number: PCT/IN2010/000201 (87) International publication number: WO 2010/109494 (30.09.2010 Gazette 2010/39)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR (30) Priority: 27.03.2009 IN DE06092009 (71) Applicants: Council of Scientific & Industrial Research New Delhi 110 001 (IN) Department Of Information Technology New Delhi 110 003 (IN)	(72) Inventors: SEN, Ranjan Kolkata 700 032 (IN) DHAR, Anirban Kolkata 700 032 (IN) PAUL, Mukul, Chandra Kolkata 700 032 (IN) MAITI, Himadri, Sekhar Kolkata 700 032 (IN) (74) Representative: Jakobsson, Jeanette Helene  Awapatent AB Bellevuevägen 46 P.O. Box 5117 S-200 71 Malmö S-200 71 Malmö (SE)